Asynchrony and regional differences in the reproductive cycle of the greenback stingaree Urolophus viridis from south-eastern Australia

Trinnie,FI, Walker,TI, Jones,PL and Laurenson,LJ 2014, Asynchrony and regional differences in the reproductive cycle of the greenback stingaree Urolophus viridis from south-eastern Australia, Environmental Biology of Fishes, vol. 98, no. 1, pp. 425-441, doi: 10.1007/s10641-014-0273-4.

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Title Asynchrony and regional differences in the reproductive cycle of the greenback stingaree Urolophus viridis from south-eastern Australia
Author(s) Trinnie,FI
Walker,TI
Jones,PLORCID iD for Jones,PL orcid.org/0000-0002-5028-5775
Laurenson,LJORCID iD for Laurenson,LJ orcid.org/0000-0003-2321-7512
Journal name Environmental Biology of Fishes
Volume number 98
Issue number 1
Start page 425
End page 441
Total pages 17
Publisher Springer Netherlands
Place of publication Dordrecht , Netherlands
Publication date 2014-11-30
ISSN 0378-1909
Keyword(s) Gestation
Maternity
Maturity
Ovulation
Reproduction
Science & Technology
Life Sciences & Biomedicine
Ecology
Marine & Freshwater Biology
Environmental Sciences & Ecology
BIOLOGY
PARAMETERS
BATOIDEA
GROWTH
POPULATION
VICTORIA
STINGRAY
SHARKS
Summary Determining the periodicity of the reproductive cycle in chondrichthyan species when the population is recruiting asynchronously, as found for Urolopus viridis, can be problematic. The reproductive cycle generally requires distinguishable trends in reproductive indices across the population. The present study utilised other similar and sympatric urolophid species with synchronous reproductive cycles. Through data collected in the present study and comparisons of maximum total length (TL), periodicity of egg and embryo in utero, ovarian cycles, largest ovarian follicle diameter, and matrotrophic contribution (percentage increase from egg to embryo after maternal histotroph supplement) from similar studies, an annual reproductive cycle can be hypothesised. Sampling across two separate regions of Lakes Entrance (LE) and Western Bass Strait (WBS), U. viridis also showed regionality in several of the reproductive indices. Maximum TL and mass for females, mean size-at-birth, and female size-at-maturity and size-at-maternity in LE were markedly smaller than in WBS. In both regions litter size (1–2) increased with TL, with an exception of one female in WBS producing a litter of 3 which could be attributed to the larger TL. The implication of U. viridis producing such few young annually is they have the lowest biological productivity of any urolophid species in south-eastern Australia.
Language eng
DOI 10.1007/s10641-014-0273-4
Field of Research 060205 Marine and Estuarine Ecology (incl Marine Ichthyology)
060303 Biological Adaptation
060308 Life Histories
Socio Economic Objective 960802 Coastal and Estuarine Flora
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Springer Netherlands
Persistent URL http://hdl.handle.net/10536/DRO/DU:30068010

Document type: Journal Article
Collection: Centre for Integrative Ecology
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